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Finding the Fourth Proportional to 86,913, 119,947.23 and 55,070.28

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Solution

The fourth proportional to 86,913, 119,947.23 and 55,070.28 is: 76,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,913 : 119,947.23 = 55,070.28 : x
  2. Step 2: Convert to fraction form
    86,913/119,947.23 = 55,070.28/x
  3. Step 3: Cross multiply
    86,913x = 119,947.23 × 55,070.28
  4. Step 4: Simplify right side
    86,913x = 6,605,527,541.32
  5. Step 5: Solve for x
    x = 6,605,527,541.32/86,913
  6. Step 6: Final answer
    x = 76,001.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.